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Finding the Fourth Proportional to 12,836.30, 17,713.95 and 7,530.10

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Solution

The fourth proportional to 12,836.30, 17,713.95 and 7,530.10 is: 10,391.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.30 : 17,713.95 = 7,530.10 : x
  2. Step 2: Convert to fraction form
    12,836.30/17,713.95 = 7,530.10/x
  3. Step 3: Cross multiply
    12,836.30x = 17,713.95 × 7,530.10
  4. Step 4: Simplify right side
    12,836.30x = 133,387,814.90
  5. Step 5: Solve for x
    x = 133,387,814.90/12,836.30
  6. Step 6: Final answer
    x = 10,391.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.